#pragma once
// ##########################################################################
// #                                                                        #
// #                               CCFBO                                    #
// #                                                                        #
// #  This program is free software; you can redistribute it and/or modify  #
// #  it under the terms of the GNU Library General Public License as       #
// #  published by the Free Software Foundation; version 2 or later of the License.  #
// #                                                                        #
// #  This program is distributed in the hope that it will be useful,       #
// #  but WITHOUT ANY WARRANTY; without even the implied warranty of        #
// #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the          #
// #  GNU General Public License for more details.                          #
// #                                                                        #
// #          COPYRIGHT: EDF R&D / TELECOM ParisTech (ENST-TSI)             #
// #                                                                        #
// ##########################################################################

#include "CCFbo.h"

// Qt
#include <QOpenGLShaderProgram>
#include <QString>

class QObject;

//! Shader program
/** Now a simple encapsulation of QOpenGLShaderProgram providing two helper functions.
 **/
class CCFBO_LIB_API ccShader : public QOpenGLShaderProgram
{
	Q_OBJECT

  public:
	//! Default constructor
	ccShader(QObject* parent = 0);

	//! Destructor
	virtual ~ccShader() = default;

	//! Creates program from two shader files with same base filename
	/** Path and extensions (.vert and .frag) are automatically
	    added to shader base filename (shortcut to ccShader::loadProgram).
	    \param shaderBasePath shader files path
	    \param shaderBaseFilename shader base filename
	    \param error error string (if any error occurred)
	    \return success
	**/
	virtual bool fromFile(QString shaderBasePath, QString shaderBaseFilename, QString& error);

	//! Creates program from one or two shader files
	/** Filenames must be absolute (full path).
	    \param vertShaderFile vertex shader filename
	    \param fragShaderFile fragment shader filename
	    \param error error string (if any error occurred)
	**/
	virtual bool loadProgram(QString vertShaderFile, QString fragShaderFile, QString& error);
};
